The process of cooling can be best defined as?

Answer 1

a cool per is a sheltie. Th also a cat is a pretty cool pet. But dogs are funner.

Answer 2

No, under normal circumstances, yes (perhaps), if we consider superheated liquids.

Under normal conditions, when a liquid reaches the boiling point, no temperature increase of the liquid will occur when heat is added. What happens instead is that any more energy is used to transform the liquid into a gas. The temperature itself, of the liquid, will not change.

There is no cooling because the total energy of the liquid does not change (proportionally to the loss of liquid through evaporation). The boiling process requires that more heat is added which will then be used to boil the liquid, without decreasing the temperature of the liquid left behind.

Again under normal circumstances, a liquid that is not being heated will not boil spontaneously and will, therefore, not reduce in temperature because of boiling.

If we consider a superheated the liquid, then we can argue a different point of view.

Under certain circumstances, liquids can reach temperatures beyond the boiling point. This is called super heating. When a liquid is superheated, any small perturbation can cause part of the water to evaporate instantaneously, creating a dangerous explosion of hot liquid.

When this happens, the evaporated liquid carries most of the energy, leaving behind liquid at the boiling point. This could be interpreted as the boiling of a superheated liquid being a cooling process.

You can experiment with this using a conventional microwave oven. Place a cup of normal tap water in a cup and distilled water in another. Place both of them in the microwave oven and wait until one of the cups of water is boiling. From then on, the water in the other cup (the distilled water), will be super heating. Any perturbation of that water will cause instant boiling.

Be careful! Normal tap water can sometimes superheat too and the boiling process, in both cups, is literally explosive: the water will spill all around the cup and can create serious burns if you are not careful. Remember, the water will be at a temperature beyond the boiling point: if entering into contact with boiling water is terrible, you really don't want to know what happens if you touch superheated water.

Answer 3

It might be possible to argue that when something boils, cooling takes place at the "surface" where the boiling is going on. Let's look into things just a bit and attempt to puzzle this out.

We begin our experiment by taking a pan of water that is just beginning to boil and look at the surface. The water is just at its boiling point, and more and more molecules of water are "leaving" the surface. We recall that it takes thermal energy to change liquid water to a gas (or vapor, if you prefer), and that happens without a change in temperature. Look closely at the molecules.

A whole bunch of molecules of water are right at the boiling point on the surface. Some are ready to "jump" into their gaseous form. They need energy to make this phase transition, and that energy has to come from somewhere. A few molecules of water grab some thermal energy from their neighbors and make the change of state (which is a physical one, by the way). But their neighbors, those molecules left behind, now have a bit less thermal energy after giving it to their now-departed associates. They were "cooled" in the process of boiling.

Answer 4

evaporation

Cooling is a decrease of the temperature of a system or material.

Answer 5

process of slow cooling is called ................annealing

Answer 6

loosing heat.

Answer 7

Sweating